package thread;


import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingDeque;
import java.util.concurrent.BlockingQueue;

//实现一个固定线程个数的线程池
class MyThreadPool {
    private BlockingQueue<Runnable> queue = null;

    public MyThreadPool(int n) {
        //初始化线程池，创建固定个数的线程
        //这里使用ArrayBlockingQueue作为任务队列，容量为1000
        queue = new ArrayBlockingQueue<>(1000);

        // 创建 N 个线程
        for (int i = 0; i < n; i++) {
            Thread t = new Thread(() -> {
                try {
                    while (true) {
                        Runnable task = queue.take();
                        task.run();
                    }
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

            });
            //t.setDaemon(true);//默认为前台线程，加上这个后则转为后台线程
            t.start();
        }
    }

    public void submit(Runnable task) throws InterruptedException {
        //将任务放进队列中
        queue.put(task);
    }

}

public class Demo37 {
    public static void main(String[] args) throws InterruptedException {
        MyThreadPool pool = new MyThreadPool(10);

        //向线程池提交任务
        for (int i = 0; i < 100; i++) {
            int id = i;
            pool.submit(()->{
                System.out.println(Thread.currentThread().getName()+",id= "+id);
            });
        }
    }
}
